AD9854ASTZ

ANALOG DEVICES  AD9854ASTZ  芯片, 正交频率合成器 DDS 300MSPS

The is a Digital Synthesizer, highly integrated device that uses advanced DDS technology, coupled with two internal high speed, high performance quadrature DACs to form a digitally programmable I and Q synthesizer function. When referenced to an accurate clock source, the AD9854 generates highly stable, frequency-phase, amplitude-programmable sine and cosine outputs. Maintaining 17-bit ensures excellent SFDR. The circuit architecture of the AD9854 allows the generation of simultaneous quadrature output signals at frequencies up to 150MHz, which can be digitally tuned at a rate of up to 100 million new frequencies per second. The 12-bit I and Q DACs, coupled with the innovative DDS architecture, provide excellent wideband and narrow-band output SFDR.

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300MHz internal clock rate

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FSK, BPSK, PSK, chirp, AM operation

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Dual integrated 12-bit digital-to-analog converters DACs

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Ultrahigh speed comparator, 3ps rms jitter

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Excellent dynamic performance 80dB SFDR at 100MHz ±1MHz AOUT

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4x to 20x Programmable reference clock multiplier

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Dual 48-bit programmable frequency registers

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Dual 14-bit programmable phase offset registers

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12-bit Programmable amplitude modulation and

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ON/OFF output shaped keying function

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Single-pin FSK and BPSK data interfaces

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PSK capability via input/output interface

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Linear or nonlinear FM chirp functions with single-pin

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frequency hold function

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Frequency-ramped FSK

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<25ps RMS total jitter in clock generator mode

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Automatic bidirectional frequency sweeping

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Sinx/x correction

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10MHz Serial 2- or 3-wire SPI compatible

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100MHz Parallel 8-bit programming